73
72
Voltage Distribution Ratio
The characteristic values tabulated in the catalog for the individual tube types are measured with the voltage-divider networks having the
voltage distribution ratio shown below.
Note 1 : The shield pin should be connected to Dy5.
2 : Acc to be connected to Dy7 except R4998
Number of
Stage
Distribution Ratio
Codes
Voltage Distribution Ratio
K : Photocathode Dy : Dynode P : Anode G : Grid F : Focus
8 K G Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Acc Dy7 Dy8 P
2—211111—11
11111111—11
1.3 4.8 1.2 1.8 1 1 1 1 0.5 3 2.5
3 — 1.5 1 1 1 1 1 — 1 1
3 — 1.5 1.5 1 1 1 1 — 1 1
7 — 1 1.5 1 1 1 1 — 1 1
4011.41111—11
22111111—11
1—111111—10.5
9KG1G2G3Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 P
1———111111111
31——11111.51111
5030111111111
10 K G Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 P
1—1111111111
111111111111
1.5—1111111111
2—1111111111
2 — 1 1.5 1 1 1 1 1 1 1 0.75
3—1111111111
3—11.511111111
3—1.5111111111
4—11.511111111
1.3 4.8 1.2 1.8 1 1 1 1 1 1.5 3 2.5 (Note 2)
1.5 — 1.5 1.5 1 1 1 1 1 1 1 0.5
1.5 — 1.5 1.5 1 1 1 1 1 1 1 1
K Dy1 F2 F1 F3 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 P
11.3 0 0.6 0 3.4 5 3.33 1.67 1 11111
11 K G Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 P
1—11111111111
8 0.05 11111111111
0.51.521111111110.5
K F2 F1 F3 Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 P
5 1 2 0.02 3 1 1 1 1 111111
12 K G Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 Dy12 P
3—331111111125
11111111111111
1.2 2.8 1.2 1.8 1 1 1 1 1 1 1.5 1.5 3 2.5
2—111111111111
4011.41111111111 (Note 1)
402.51.51111111111
1 3 1.2 1.8 1 1 1 1 1 1 1.5 1.5 3 2.5
401.21.81111111111
6011.41111111111
1—111111111111
14 K G1G2Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 Dy12 Dy13 Dy14 P
2.57.501.21.8111111111.51.532.5
15 K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 Dy12 Dy13 Dy14 Dy15 P
2111111111111111
16 K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 Dy12 Dy13 Dy14 Dy15 Dy16 P
21111111111111111
19 K Dy1 Dy2 Dy3 ................. Dy17 Dy18 Dy19 P
2111................. 1111
q
w
e
r
t
y
u
i
o
!0
!1
!2
!3
!4
!5
!6
!7
!8
!9
@0
@1
@2
@3
@4
@5
@6
@7
@8
@9
#0
#1
#2
#3
#4
#5
#6
#7
#8
#9
$0
$1
$2
$3
A∗ : Newly listed in this catalog.
BRefer to pages 88 and 89 for typical spectral response charts.
CPhotocathode materials
BA : Bialkali
LBA : Low dark current bialkali
HBA : High temperature bialkali
MA : Multialkali
EMA : Extended red multialkali
DWindow materials
MF : MgF2
Q : Quartz (Fused Silica or Synthetic Silica)
K : Borosilicate glass
U : UV glass
EBasing diagram
NOTES
FDynode structure
B : Box-and-grid
VB : Venetian blind
CC : Circular-cage
L : Linear-focused
B+L : Box and linear focused
FM : Fine Mesh
CM : Coarse Mesh
MC : Metal Channel
G★ : A socket will be supplied with the tube.
■ : Sockets may be available from electronics supply houses or our sales office. (See
pages 76 and 77.)
H The maximum ambient temperature range is -80 to +50°C except the following tubes
using a high temperature bialkali photocathode which withstands from -80 up to
+175°C. When a tube is operated below -30°C see page 86, "PRECAUTIONS FOR
USE".
Type No. Diameter Type No.
Diameter
J Averaged over any interval of 30 seconds maximum.
KMeasured at the peak wavelength.
LRefer to page 72 for voltage distribution ratios.
MAnode characteristics are measured with the supply voltage and voltage distribution
ratio specified by Note L.
NAnode characteristics are measured at the specified supply voltage on page 61.
R
Anode characteristics are measured with the specified anode-to-cathode supply voltage.
aat 122nm
bat 254nm
cat 852nm
dMeasured using a red filter Toshiba IR-D80A.
eat 4A/lm
fat 10A/lm
gat 1000A/lm
hDark counts per second (cps)
jDark counts per second (cps) after one hour storage at -20°C.
kBackground noise per minute (cpm)
: Dynode
: Grid (Focusing Electrode)
: Accelerating Electrode
: Photocathode
: Anode
: Shield
: Internal Connection (Do not use)
: No Connection (Do not use)
DY
G(F)
ACC
K
P
SH
IC
NC
Short Index
Pin
Flying
Lead
Key
Pin
BASING DIAGRAM SYMBOLS
All base diagrams show terminals viewed from the
base end of the tube.
13mm (1/2") R4177-01 38mm (1-1/2") R1705
19mm (3/4") R1281,R3991 51mm (2") R4607-01
25mm (1") R1288 ——